annotate src/g23m-gprs/llc/llc_irxp.c @ 303:f76436d19a7a default tip

!GPRS config: fix long-standing AT+COPS chance hanging bug There has been a long-standing bug in FreeCalypso going back years: sometimes in the AT command bring-up sequence of an ACI-only MS, the AT+COPS command would produce only a power scan followed by cessation of protocol stack activity (only L1 ADC traces), instead of the expected network search sequence. This behaviour was seen in different FC firmware versions going back to Citrine, and seemed to follow some law of chance, not reliably repeatable. This bug has been tracked down and found to be specific to !GPRS configuration, stemming from our TCS2/TCS3 hybrid and reconstruction of !GPRS support that was bitrotten in TCS3.2/LoCosto version. ACI module psa_mms.c, needed only for !GPRS, was missing in the TCS3 version and had to be pulled from TCS2 - but as it turns out, there is a new field in the MMR_REG_REQ primitive that needs to be set correctly, and that psa_mms.c module is the place where this initialization needed to be added.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 08 Jun 2023 08:23:37 +0000
parents fa8dc04885d8
children
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1
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project :
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4 | Modul :
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5 +-----------------------------------------------------------------------------
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6 | Copyright 2002 Texas Instruments Berlin, AG
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7 | All rights reserved.
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8 |
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9 | This file is confidential and a trade secret of Texas
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10 | Instruments Berlin, AG
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11 | The receipt of or possession of this file does not convey
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12 | any rights to reproduce or disclose its contents or to
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13 | manufacture, use, or sell anything it may describe, in
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14 | whole, or in part, without the specific written consent of
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15 | Texas Instruments Berlin, AG.
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16 +-----------------------------------------------------------------------------
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17 | Purpose : This modul is part of the entity LLC and implements all
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18 | functions to handles the incoming primitives as described in
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19 | the SDL-documentation (IRX-statemachine)
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20 +-----------------------------------------------------------------------------
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21 */
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22
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23 #ifndef LLC_IRXP_C
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24 #define LLC_IRXP_C
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25 #endif
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26
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27 #define ENTITY_LLC
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28
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29 /*==== INCLUDES =============================================================*/
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30
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31 #include "typedefs.h" /* to get Condat data types */
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32 #include "vsi.h" /* to get a lot of macros */
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33 #include "macdef.h"
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34 #include "gprs.h"
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35 #include "gsm.h" /* to get a lot of macros */
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36 #include "cnf_llc.h" /* to get cnf-definitions */
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37 #include "mon_llc.h" /* to get mon-definitions */
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38 #include "prim.h" /* to get the definitions of used SAP and directions */
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39 #include "llc.h" /* to get the global entity definitions */
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40
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41 #include "llc_irxf.h" /* to get IRX helper functions */
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42
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43
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44 /*==== CONST ================================================================*/
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45
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46 /*==== LOCAL VARS ===========================================================*/
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47
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48 /*==== PRIVATE FUNCTIONS ====================================================*/
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49
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50 /*==== PUBLIC FUNCTIONS =====================================================*/
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51
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52 /*
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53 +------------------------------------------------------------------------------
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54 | Function : irx_ll_getdata_req
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55 +------------------------------------------------------------------------------
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56 | Description : Handles the primitive LL_GETDATA_REQ
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57 |
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58 | Parameters : *ll_getdata_req - Ptr to primitive payload
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59 |
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60 +------------------------------------------------------------------------------
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61 */
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62 GLOBAL void irx_ll_getdata_req ( T_LL_GETDATA_REQ *ll_getdata_req )
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63 {
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64 BOOL frame_found;
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65 T_LL_UNITDATA_IND *ll_unitdata_ind;
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66
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67 TRACE_FUNCTION( "ll_getdata_req" );
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68
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69 SWITCH_LLC (ll_getdata_req->sapi);
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70
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71 TRACE_1_PARA("s:%d", ll_getdata_req->sapi);
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72
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73 switch (GET_STATE(IRX))
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74 {
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75 case IRX_TLLI_UNASSIGNED:
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76 /*
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77 * Ignore primitive.
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78 */
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79 PFREE (ll_getdata_req);
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80 /* SET_STATE (IRX, SAME_STATE); */
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81 break;
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82
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83 case IRX_TLLI_ASSIGNED:
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84 /*
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85 * Store L3 ready flag
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86 */
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87 llc_data->irx->ll_send_ready = TRUE;
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88 PFREE (ll_getdata_req);
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89 /* SET_STATE (IRX, SAME_STATE); */
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90 break;
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91
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92 case IRX_ABM:
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93 /*
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94 * Try to retrieve a frame from the queue and
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95 * forward it to L3, else store L3 ready flag.
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96 */
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97 irx_queue_retrieve (&ll_unitdata_ind, &frame_found);
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98 if (frame_found)
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99 {
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100 PPASS (ll_unitdata_ind, ll_data_ind, LL_DATA_IND);
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101 TRACE_2_OUT_PARA("s:%d len:%d", ll_data_ind->sapi, BYTELEN(ll_data_ind->sdu.l_buf));
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102 PSEND (hCommSNDCP, ll_data_ind);
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103
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104 llc_data->irx->ll_send_ready = FALSE;
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105
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106 /* SET_STATE (IRX, SAME_STATE); */
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107 }
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108 else
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109 {
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110 llc_data->irx->ll_send_ready = TRUE;
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111
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112 /* SET_STATE (IRX, SAME_STATE); */
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113 }
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114 PFREE (ll_getdata_req);
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115 break;
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116
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117 case IRX_ABM_BUSY:
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118 /*
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119 * Try to retrieve a frame from the queue and
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120 * forward it to L3, else store L3 ready flag.
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121 */
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122 irx_queue_retrieve (&ll_unitdata_ind, &frame_found);
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123 if (frame_found)
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124 {
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125 PPASS (ll_unitdata_ind, ll_data_ind, LL_DATA_IND);
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126 TRACE_2_OUT_PARA("s:%d len:%d", ll_data_ind->sapi, BYTELEN(ll_data_ind->sdu.l_buf));
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127 PSEND (hCommSNDCP, ll_data_ind);
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128
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129 llc_data->irx->ll_send_ready = FALSE;
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130
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131 /*
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132 * Indicate the clearance of the 'own received
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133 * busy' condition to the peer entity
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134 */
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135 irx_send_ack (ABIT_SET_REQ);
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136
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137 SET_STATE (IRX, IRX_ABM);
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138 }
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139 else
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140 {
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141 llc_data->irx->ll_send_ready = TRUE;
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142
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143 /* SET_STATE (IRX, SAME_STATE); */
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144 }
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145 PFREE (ll_getdata_req);
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146 break;
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147
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148 default:
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149 PFREE (ll_getdata_req);
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150 TRACE_ERROR( "LL_GETDATA_REQ unexpected" );
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151 break;
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152 }
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153
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154 } /* irx_ll_getdata_req() */